Is there any way to disable spam filter completely?

This completely misses the point. In order to do this I need to know IN ADVANCE who I wish to receive mail from. Therefore, I must keep remembering to check my Junk folder to ensure that I haven't missed anything vital. So how, in the name of common sense, does the junk filter help me in any way whatsoever?

What a joke!  The settings were set to the default, which should prevent any incoming messages from unknown senders, yet the safe list was full of spam addresses.  I put in the rule mentioned at the head of this article, and reposted by someone just above somewhere, and I got one test email through, but not the second.  I was waiting for an important email from my anti-virus software provider, too,.  They were **not** in the junk folder, they were zapped by the server-level filter.  And to add insult to injury, when  you click into the junk folder, they tell you there is no junk and slap themselves on the back for losing your email!

I use Cox, which is my ISP, and their email is flawless.  If you have to use a freebie account, use gmail.  Microsoft is a joke.

I tried that fix, along with just about every other solution offered in these 8 pages.

They only work 20-40% of the time.

I have "external" email accounts because I own & manage 23 web pages, located on other servers that are managed by professional companies.  No Mom & Pop operations.

Every message sent to an Outlook address is automatically junked, regardless of content.   Even messages from Gmail are filtered out 30% of the time. 

Bottom line:  Outlook can't be trusted for important communications. Unless you rename the junk folder as Inbox.

JanD12's solution on the previous page of this thread is still working perfectly for me, and it accounts for any potential sender.